Safety protection structure of elevator door lock
By designing the locking and shock absorption mechanisms of the elevator door locks, the problem of damage to internal components caused by inertial forces when the elevator stops is solved, achieving safe locking and shock absorption protection for the elevator doors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG QIYUAN ELEVATOR PARTS MFG CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-07
AI Technical Summary
The existing elevator door locks suffer from internal component misalignment and damage due to inertial forces when they stop.
The elevator door is locked by a combination of locking and damping mechanisms. The locking mechanism locks the door by driving a worm gear, worm wheel and gear transmission with a motor, while the damping mechanism provides shock protection through the cooperation of telescopic rod and spring.
It effectively prevents damage to internal components of elevator door locks due to inertial forces, avoids the risk of people being trapped, stabilizes the car structure, and prevents electrical failures.
Smart Images
Figure CN224467315U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of elevator technology, and in particular relates to a safety protection structure for elevator door locks. Background Technology
[0002] According to the published patent CN214456081U, a construction elevator safety protection door anti-inward opening lock includes a door lock sheet and bolts. The door lock sheet is a rectangular sheet with a first hole and a second hole, both positioned at the same horizontal level. The bolts include a first bolt and a second bolt, which pass through the first and second holes and are movable along them. The second hole has a straight-line structure. The first and second holes have the same horizontal length, and each hole has two perpendicularly positioned locking positions and an entrance / exit at both ends. The door lock sheet also has a handle. This invention, by being installed on the outside of the safety door, prevents personnel from removing or damaging it from the inside. The safety door lock can be opened or closed by adjusting the handle. However, it still has the following shortcomings:
[0003] When the elevator stops at a floor, the inertia caused by the elevator stopping will cause inertial forces to be generated in the internal components of the elevator. If it is difficult to dampen and protect them, the internal components may be misaligned and damaged. Therefore, we provide an elevator door lock safety protection structure. Utility Model Content
[0004] The purpose of this utility model is to provide a safety protection structure for elevator door locks. Through a shock-absorbing mechanism, the internal components of the elevator door lock are protected against shock. This solves the problem that when the elevator stops at a floor, the inertia caused by the elevator stopping causes inertial forces to be generated in the internal components of the elevator. If it is difficult to protect these components from shock, the internal components may be misaligned and damaged.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is an elevator door lock safety protection structure, including a base, a motor placement bracket fixedly connected to the top of the base, a locking mechanism provided at the top of the base, and a shock absorption mechanism provided at the bottom of the base;
[0007] The locking mechanism includes a motor, the output end of which is provided with a coupling to which a worm gear is fixedly connected. A rotating frame one is fixedly connected to the top of the base. A connecting rod is rotatably connected to the inner wall of the rotating frame one. A worm gear is fixedly connected to the outer surface of the connecting rod. A support frame is fixedly connected to the top of the base. A rotating frame two is fixedly connected to the top of the base. A gear is fixedly connected to the outer wall of the connecting rod. A fixed rod is rotatably connected to the inner wall of the rotating frame two. A crown gear is fixedly connected to the outer wall of the fixed rod. A locking block is fixedly connected to the end of the fixed rod away from the crown gear. The bottom of the locking block contacts an elevator connecting block.
[0008] Furthermore, the bottom of the motor is fixedly connected to the top of the motor mounting frame, the outer surface of the worm gear meshes with the outer surface of the worm wheel, the outer surface of the gear meshes with the outer surface of the crown gear, there are two gears, and the outer surface of the worm gear is rotatably connected to the inner wall of the support frame.
[0009] Furthermore, the shock absorption mechanism includes an upper fixed plate, the top of which is fixedly connected to the top of the base, and a telescopic rod is fixedly connected to the bottom of the upper fixed plate.
[0010] Furthermore, a lower fixing block is fixedly connected to the bottom of the telescopic rod, and there are two lower fixing blocks. A central rod is fixedly connected to one side of the two lower fixing blocks that are close to each other.
[0011] Furthermore, a spring is fixedly connected to the top of the lower fixing block, and the end of the spring away from the lower fixing block is fixedly connected to the top of the upper fixing plate.
[0012] Furthermore, a fixing frame is fixedly connected to the bottom of the upper fixing plate, and a connecting rod is rotatably connected to the inner wall of the fixing frame.
[0013] Furthermore, a slider is slidably connected to the outer surface of the central rod, and a fixing frame is fixedly connected to the top of the slider.
[0014] Furthermore, the inner wall of the second fixed frame is rotatably connected to the outer wall of the connecting rod, and there are two sliders, with one of the two sliders being fixedly connected to a spring.
[0015] This utility model has the following beneficial effects:
[0016] 1. This utility model, by setting a locking mechanism, starts the motor to drive the worm gear to rotate. When the worm gear rotates, the worm wheel also rotates. When the worm wheel rotates, the connecting rod also rotates. At this time, the two gears also rotate, thereby driving the two crown gears to rotate inside the fixed rod. When the fixed rod rotates, the locking block also rotates and locks into the elevator connecting block, thereby locking the elevator door. Its advantage is that it locks the elevator door to avoid the risk of people being trapped, and at the same time, it can stabilize the car structure and prevent electrical faults from triggering dangers.
[0017] 2. This utility model, by setting a shock-absorbing mechanism, allows the upper fixed plate to release force downwards due to inertia. When the upper fixed plate is subjected to force, spring one contracts, and at the same time, the telescopic rod fixed at the bottom of the upper fixed plate is also compressed, thus fixing the compression and rebound position of spring one. When the upper fixed plate falls, the first fixed frame also falls. At this time, the two connecting rods will move towards each other, and the second fixed frame will also move, thereby driving the slider to move at the same time. At the same time, spring two will also be compressed under pressure. Its advantage is to provide shock absorption protection for the elevator door lock and prevent damage to the internal components of the door lock caused by frequent elevator stops.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the motor structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the worm gear structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the upper fixing plate structure of this utility model;
[0024] Figure 5 This is a schematic diagram of the second spring structure of this utility model.
[0025] The attached diagram lists the components represented by each number as follows:
[0026] 11. Base; 12. Motor mounting bracket; 1. Locking mechanism; 101. Motor; 102. Worm gear; 103. Support frame; 104. Worm wheel; 105. Connecting rod; 106. Gear; 107. Crown gear; 108. Fixing rod; 109. Locking block; 110. Elevator connecting block; 111. Rotating frame one; 112. Rotating frame two; 2. Shock absorption mechanism; 201. Upper fixing plate; 202. Telescopic rod; 203. Spring one; 204. Lower fixing block; 205. Center rod; 206. Fixing frame one; 207. Connecting rod; 208. Slider; 209. Spring two; 210. Fixing frame two. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figure 1-5 As shown, this utility model is a safety protection structure for an elevator door lock, including a base 11. A motor mounting bracket 12 is fixedly connected to the top of the base 11. A locking mechanism 1 is provided on the top of the base 11, and a shock-absorbing mechanism 2 is provided at the bottom of the base 11. The locking mechanism 1 includes a motor 101. A worm gear 102 is fixedly connected to the output end of the motor 101 via a coupling. A rotating frame 111 is fixedly connected to the top of the base 11. By starting the motor 101, the worm gear 102 fixed at its bottom output end rotates inside the rotating frame 111. A connecting rod 10 is rotatably connected to the inner wall of the rotating frame 111. 5. A worm gear 104 is fixedly connected to the outer surface of the connecting rod 105. When the worm 102 rotates, the worm gear 104, which meshes with the worm 102, will also rotate. When the worm gear 104 rotates, the connecting rod 105, which is fixed to its inner wall, will also rotate. A support frame 103 is fixedly connected to the top of the base 11. A rotating frame 112 is fixedly connected to the top of the base 11. A gear 106 is fixedly connected to the outer wall of the connecting rod 105. A fixed rod 108 is rotatably connected to the inner wall of the rotating frame 112. The rotation of the connecting rod 105 will drive the two gears 106 fixed at both ends of the connecting rod 105 to rotate simultaneously.
[0029] A crown gear 107 is fixedly connected to the outer wall of the fixed rod 108. A locking block 109 is fixedly connected to the end of the fixed rod 108 away from the crown gear 107. The bottom of the locking block 109 contacts the elevator connecting block 110. The rotation of the gear 106 drives the two crown gears 107 meshing with it to rotate inside the fixed rod 108. When the fixed rod 108 rotates, the locking block 109 fixed to the outer wall of the fixed rod 108 will also rotate. The bottom of the motor 101 is fixedly connected to the top of the motor mounting frame 12. The outer surface of the worm gear 102 meshes with the outer surface of the worm wheel 104. The outer surface of the gear 106 meshes with the outer surface of the crown gear 107. There are two gears 106. The outer surface of the worm gear 102 is rotatably connected to the inner wall of the support frame 103.
[0030] The shock absorption mechanism 2 includes an upper fixed plate 201, the top of which is fixedly connected to the top of the base 11. A telescopic rod 202 is fixedly connected to the bottom of the upper fixed plate 201. When the elevator stops, the upper fixed plate 201 will release force downwards due to inertia. Two lower fixed blocks 204 are fixedly connected to the bottom of the telescopic rod 202. A central rod 205 is fixedly connected to the side of the two lower fixed blocks 204 that are close to each other. A spring 203 is fixedly connected to the top of the lower fixed blocks 204. When the upper fixed plate 201 is subjected to force, the spring 203 fixed at its bottom contracts, and the telescopic rod 202 fixed at the bottom of the upper fixed plate 201 also compresses. The end of the spring 203 away from the lower fixed block 204 is fixedly connected to the top of the upper fixed plate 201. A fixed frame 206 is fixedly connected to the bottom. A connecting rod 207 is rotatably connected to the inner wall of the fixed frame 206. When the upper fixed plate 201 falls, the fixed frame 206 fixed at its bottom also falls. At this time, the two connecting rods 207 rotatably connected to its inner wall will move towards each other. A slider 208 is slidably connected to the outer surface of the center rod 205. A fixed frame 210 is fixedly connected to the top of the slider 208. The inner wall of the fixed frame 210 is rotatably connected to the outer wall of the connecting rod 207. There are two sliders 208. A spring 209 is fixedly connected to the two sliders 208 that are close to each other. When the fixed frame 210 at the other end of the connecting rod 207 moves, the slider 208 fixed at its bottom moves at the same time. At the same time, the spring 209 fixed between the two sliders 208 will also be compressed by pressure.
[0031] One specific application of this embodiment is:
[0032] When the elevator door closes, the motor 101 starts, driving the worm gear 102 fixed at its bottom output end to rotate. When the worm gear 102 rotates, the worm wheel 104 meshing with it also rotates. When the worm wheel 104 rotates, the connecting rod 105 fixed to its inner wall also rotates. At this time, the two gears 106 fixed at both ends of the connecting rod 105 also rotate, thereby driving the two crown gears 107 meshing with them to rotate inside the fixed rod 108. When the fixed rod 108 rotates, the locking block 109 fixed to its outer wall also rotates, locking into the elevator connecting block 110, thus locking the elevator door. This has the advantage of locking the elevator door to avoid the risk of people being trapped, and it also stabilizes the car structure, preventing electrical faults from triggering dangers. When the elevator stops, the upper fixed plate 201 will, due to inertia... This releases downward force. When the upper fixed plate 201 is subjected to force, the spring 203 fixed at its bottom contracts, and the telescopic rod 202 fixed at the bottom of the upper fixed plate 201 also compresses, thus fixing the compression and rebound position of the spring 203. As the upper fixed plate 201 falls, the fixing bracket 206 fixed at its bottom also falls. At this time, the two connecting rods 207 rotating on its inner wall will move towards each other, and the fixing bracket 210 at the other end of the connecting rod 207 will also move, thereby driving the slider 208 fixed at its bottom to move simultaneously. At the same time, the spring 209 fixed between the two sliders 208 will also be compressed. The advantage of this is to provide shock absorption protection for the elevator door lock and prevent damage to the internal components of the door lock caused by frequent elevator stops.
[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A safety protection structure for an elevator door lock, comprising a base (11), characterized in that: A motor mounting bracket (12) is fixedly connected to the top of the base (11), a locking mechanism (1) is provided on the top of the base (11), and a shock-absorbing mechanism (2) is provided at the bottom of the base (11). The locking mechanism (1) includes a motor (101), the output end of the motor (101) is provided with a coupling to which a worm gear (102) is fixedly connected, a rotating frame (111) is fixedly connected to the top of the base (11), a connecting rod (105) is rotatably connected to the inner wall of the rotating frame (111), a worm wheel (104) is fixedly connected to the outer surface of the connecting rod (105), a support frame (103) is fixedly connected to the top of the base (11), and the base ( 11) A rotating frame two (112) is fixedly connected to the top. A gear (106) is fixedly connected to the outer wall of the connecting rod (105). A fixed rod (108) is rotatably connected to the inner wall of the rotating frame two (112). A crown gear (107) is fixedly connected to the outer wall of the fixed rod (108). A locking block (109) is fixedly connected to the end of the fixed rod (108) away from the crown gear (107). The bottom of the locking block (109) contacts an elevator connecting block (110).
2. The elevator door lock safety protection structure according to claim 1, characterized in that, The bottom of the motor (101) is fixedly connected to the top of the motor mounting frame (12), the outer surface of the worm (102) is meshed with the outer surface of the worm wheel (104), the outer surface of the gear (106) is meshed with the outer surface of the crown gear (107), there are two gears (106), and the outer surface of the worm (102) is rotatably connected to the inner wall of the support frame (103).
3. The elevator door lock safety protection structure according to claim 2, characterized in that, The shock absorption mechanism (2) includes an upper fixing plate (201), the top of which is fixedly connected to the top of the base (11), and a telescopic rod (202) is fixedly connected to the bottom of the upper fixing plate (201).
4. The elevator door lock safety protection structure according to claim 3, characterized in that, The bottom of the telescopic rod (202) is fixedly connected to a lower fixing block (204), and there are two lower fixing blocks (204). A central rod (205) is fixedly connected to one side of the two lower fixing blocks (204) that are close to each other.
5. The elevator door lock safety protection structure according to claim 4, characterized in that, A spring (203) is fixedly connected to the top of the lower fixing block (204), and the end of the spring (203) away from the lower fixing block (204) is fixedly connected to the top of the upper fixing plate (201).
6. The elevator door lock safety protection structure according to claim 5, characterized in that, The bottom of the upper fixing plate (201) is fixedly connected to a fixing frame (206), and a connecting rod (207) is rotatably connected to the inner wall of the fixing frame (206).
7. The elevator door lock safety protection structure according to claim 6, characterized in that, The outer surface of the central rod (205) is slidably connected to a slider (208), and the top of the slider (208) is fixedly connected to a fixing frame (210).
8. The elevator door lock safety protection structure according to claim 7, characterized in that, The inner wall of the fixed frame (210) is rotatably connected to the outer wall of the connecting rod (207). There are two sliders (208), and springs (209) are fixedly connected to the two sliders (208) that are close to each other.